You poor thing. I had a dislocation and breaks in 3 places when dd1 was 2. Fell down the stairs on Boxing Day. I have a plate and pin and wire holding my ankle together. Don't worry about the surgery, honestly, I would not want an epidural - a GA will mean you feel a prick and wake up when it's all over. Feeling tearful is normal. I cried my eyes out the second day I was in. A complete blabbing mess.
I managed pretty well on crutches - I have a 3 story town house, nightmare! I did a lot of hopping round the kitchen which was not really advised! Don't under estimate how tiring healing is. I'm self employed and thought I could work as normal but the first couple of weeks I couldn't do much more than watch box sets.
I healed well and don't have a limp. It gets achy in the cold and I don't like running anymore as it doesn't feel right but I can do other exercise. Ask about a removable cast. Mine was amazing and meant I could take off the cast and do gentle exercises early on (under physiology guidance). Had very little stiffness.
The worst thing was the day the physio got me on my feet. Because I had so much swelling they couldn't operate for 3 days so I had to keep my foot elevated. Getting the blood back in my foot when I put it to the floor was possible the worst thing about it. I nearly passed out, was not expecting it. But you have not been in that position so am sure it won't be nearly as bad.
After the op, take the painkillers at scheduled times to manage the pain. And take it as easy as you can. Oh and bio oil for the scar, mine is barely visible. And do exactly what your physio tells you. It will make a difference.
Good luck and keep us posted 